Date: Mon, 15 Mar 2010 21:51:00 +0200 From: Jaakko Heinonen <jh@FreeBSD.org> To: freebsd-geom@FreeBSD.org, pjd@FreeBSD.org Subject: geom_label and directories under /dev Message-ID: <20100315195059.GA1331@a91-153-117-195.elisa-laajakaista.fi>
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Hi, I was working to fix problems with GEOM label class allowing some problematic label names which can't represent proper files under /dev. For example: - empty label - "." and ".." - labels starting or ending with '/' - labels ending with /.. (Due to a bug for example /..foo/.. is allowed.) Then I noticed that directories are also problematic. Here's how to panic your system: # glabel create ab ad0 # glabel create ab/cd ad0 # ls -l /dev/label I was going to suggest disallowing of '/' in labels but in past such change has been reverted. ------------------------------------------------------------------------ r149339 | pjd | 2005-08-20 20:05:47 +0300 (Sat, 20 Aug 2005) | 5 lines Back-out the change from revision 1.14 and allow for '/' in labels again. Convinced by: green, Gavin Atkinson, dougb, gordon MFC after: 1 day ------------------------------------------------------------------------ So it's probably a dead end to try to suggest disallowing of '/'? Unfortunately it's not easy to fix all problems with directories. For starters devfs doesn't support removal of directories at all. Opinions? -- Jaakko
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